Ontology of Biological Attributes term OBA_2053239 (BCR/FOXO1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of breakpoint cluster region protein (human) in blood to amount of forkhead box protein O1 (human) in blood. Also known as: the ratio of amount of breakpoint cluster region protein (human) in blood to amount of forkhead box protein O1 (human) in blood.